The college is quiet in both senses of the word at the moment because it's still closed for the Easter holidays. However, some staff and students were going in during the holiday, including me. There are lots of project and assignment deadlines looming and work has to be handed in after the holidays, so there was a bit of last minute panicking.

The sign requesting silence is due to exams being held in the hall both before and after Easter.

It is just the word "hall" twice, once in Welsh and once in English. Though of course if I should ever have a hall named after me, it would be "Neuadd Hall", meaning the "Hall Hall", like the "Albert Hall" only more repetitive. :)

(Note: Welsh uses noun adjective like French and many other languages rather than adjective noun like English.)